Machine for attaching box-corner stays.



M. D. KNOWLTON, DEGD.

A. D. s; r. K. KNOWLTON, ADMINISTRATORS.

MACHINE FOR ATTAGHING BOX CORNER STAYS.

APPLIOATION FILED APR. 27, 1906.

Patented May 6, 1913.

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A. D. 5; I. K. KNOWLTON. ADMINISTRATOES.

MACHINE FOR ATTAGHING BOX CORNER STAYS.

APPLIOATIOK FILED APR. 27, 1906. 1,06 1 ,084. Patented May 6, 1913.

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WITNESSES:

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A. D. & I. K. KNOWLTON. ADMINISTRATOHS.

MACHINE FOR ATTACHING BOX CORNER STAYS.

APPLIGATION FILED APR. 27, 1906.

Patented May 6, 1913.

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a hJm (1H0: llClJ UNITED STATES PATENT OFFICE.

ANNTE D. KNOWLTON AND FREDERIC K. KNOWLTON, OF ROCHESTER,- NEW YORK,

' ADMINISTRATORS OF MARK D. KNOWLTON, DECEASED.- a

MACHINE FOR AT'I'AGHIN'G BOX-CORNER STAYS.

.. Specification of Ltters latent.

Application filed April 27, 1906. Serial No. 314,106.

7 '0 all whom it may concern 4 Be it known that MARK D. KNOWLTON, late a citizen of the United States, and resident of Rochester, Monroe county, State of New York, now deceased, invented certain new and useful Improvements in Machines for Attaching Box-Corner Stays, of which the following is a specification.

This invention relates to an improved machine for attaching stays o-r reinforcing strips to the corner joints of boxes made of paper, paper-board or like material; and

the invention has for its-object to permit use of the same machine, adjusted by application or removal of a' readily accessible part, for applying a turned-in. stay at the outside and inside of a box-corner,or to apply a plain stay at the. outside only of a box-corner.

The invention mainly consists in providbends or tucks under a protruding end of the cut stay into position to be acted upon by a right-angularly disposed turn-in die which lays this end of the stay smoothly against the inner face of a box-corner. hen applying a plain stay this plunger device acts as a cutter, severing a ,proper length of stay from a strip, and then serves as a presser or auxiliary die coacting with other die surfaces to closely press the stay to the outer face of the box-corner; all as hereinafter described and particularly pointed out in the appended claims.

Reference is made to the accompanying drawings forming part of this specification, and in which- Figure 1 is a side elevation of the upper parts of a box-corner stay-attaching machine embodying this invention, and with its upper front movable die and plunger port-IOIIS' 1n central vertical section, and with the gage applied as when attaching a turned- =ing and in box-corner stay. Fig. 2 is a front view of the machine so adjusted. Fig. 3 is a rear elevation of the upper movable die-stock, its' operating link, and the stay severing, tuckressing device; all removed from the machlne. Figs- 4 and 5 are detail longitudinal sectional views illustrating application of a turned-inbox-corner stay when the gage is applied; and Fig. 6 illustrates application of a plain stay when the gage is removed. 7

' In the drawings, the numeral 1 indicates the headframe of the machine in which is journaled a main driving shaft 2 having 'a pulley 3 provided with a clutch controlled by an elbow-lever 4 and a connected footoperated rod 5 for throwing the driving shaft into gear with the pulley to operate ;the machine. At the front of the frame 1 is fitted a vertically reciprocatingadie-stock 6 carrying a die 7 notched upward angularly at its working .face and cooperating with the bed-dies 8, 9, 10, having corresponding right-angularly disposed upper faces. These bed-dies are held to a horizontally adjustable stock 11 which resists pressure of the opposing dies on a box-corner while afiixing thereto a stay which had been severed from a forwardly advanced stay-strip 13 by the combination stay severing, tucking'and pressing device 14. This device is preferably held to and operated by the same link 15 which operates the die 7 and is reciprocated vertically by an eccentrioally set -wrist-pin 16 on the driving shaft 2. A vertically elongated or eccentric slot at the lower end of the link 15 receives a round stud 17 which is fixed to a block 18 having limited independent movement vertically in a recess of the die-stock 6 which normally provides a clearance space at the bottom of the block. A vertically adjustable rod 19 fitted loosely in the die-stock 6, has a shoulder .or collar 20 resting on a spring 21 placed in a recess of the stock. This rod is screwed into the block 18 so that by turning the rod said spring 21 may be compressed more or less between the rod collar 20 and the bottom wall of the spring receivin recess to regulate pressure of the upper ie 7 upon the stay while finally pressing it to a box-corner inmanner hereinafter more fully explained.

\ Patented Mayfi, 1913.

device 14 during applicatlon of turned-in and plain box-corner stays, said device is elastically supported, as best shown in, Figs. 1 and 3 of the drawings. To the stud 17 of the die-stock block 18 is fixed a. lug 22 which has an internal screw-thread engaging an externalthread upon a collar or sleeve 23 through which loosely passes airod or stem 24 having a foot-block 25 which squarely bears upon the top of the device 14, and this device has a vertical slot 26 receiving a steadying pin 27 fixed in tl1e,die-- stock 6. This connection of the device 14 permits it to be readily removed at any time for sharpening or renewal. 0n the stem 24 is placed aspring 28 which expands between the lower end of the collar 23 and the block 25, thereby forcing the device 14- normally downward until stopped by the pin 27 while allowing upward yielding of the device against the tension of the spring. The collar may be turned in the lug 22 for regulating the tension of the spring 28, by a pin or spanner applied at upper holes in the collar, and after being so adjusted a locknut lever 29 threaded to the collar is. turned;

down against the lug 22 to maintain the desired spring tension.

The device 14 has an angular inner lower cutting edge 30 coaeting with a reverse angular outer cutting edge 31 of a hollow stationary cutter 32 suitably held to the frame 1 to allow the angularly-folded stay-strip 13 to be fed between the edges of the two cutters 30, 32, any necessary distance to cause the cutters to sever a box-corner stay 12 of proper length from said strip. This forward feeding of the stay-strip 13 may be effected in any approved manner and preferably by opposing bodily reciprocating clamping jaws 33 guided on the frame and operated by a link 34 coupled to a lever 35 hung upon the frame 1 and moved forward by a face cam 36 on the driving shaft 2, and retracted by a spring 35 which thus also moves the clamping jaws rearward in readiness to again seize and clamp the stay-strip prior to the next forward feed of the strip to the cutters.

When the horizontal die-stock or anvil- 7 block 11 is adjusted backward or forward to accommodate a lower or higher box to be corner-stayed, the position of'the stay-strip feeding devices on their guide is simultaneously changed for assuring feeding and severing of a correspondingly shorter or longer stay 12 from said strip. This adjustment of the stay feeding devices is caused primarily by a lever 37 fulcrumed on the frame and having at its lowerend a slot receiving a pin 38 fixed to the stock 11, while the upper end of said lever 37 acts upon an adjustable plate 39, held to the lever 35. \Vhen the stock 11 is moved rearward to acframe 1,

neereaa commodate a lower box the lever 37 positively swings the lever 35 forward to move the feeding devices 33 bodily thus correspondingly shorten the length of stay-strip fed to the cutters 30, 32; and when the stock 11 is moved forward to accommodate a higher box the head of lever 37 is moved rearward and permits the spring 35 to draw the lever 35 and feeding devices 33 rearward to provide for feeding and cutting a correspondingly longer staystrip (for the corner of a higher box.

The stock 11 carrying the bed-die 8, 9, 10, may be adjusted forward or backward in any manner, but preferably by a pinion 40 fixed to a shaft 41 journaled on the frame 1 and adapted to be turned by an applied key. This pinion engages a rack 42 on the stock 11, and when the stock is properly adjusted it is locked by a suitable clamp '43 forced to the pinion shaft by a hand-screw 44. During the box-joint-staying operation the beddie 8, here shown made in three pieces, is immovable endwise in the stock 11, but the other two dies 9, 10 are moved forward and backward but are so guided in the stock that they do not movement. As more clearly shown in Figs. 1 and 4 of the drawings, the die 10. has a rearward extension carrying a laterally projecting pin 45 which enters a slot in the lower free end of a lever 46 fulcrum'ed on the frame 1. This lever is movable rearward by a face cam 47 on the driving shaft 2 and is retracted forwardly by a sprlng 48. Within the die 10 is loosely fitted a rod 49 on the rear end of which is placed a spring 50 which normally expands between the rear forward and have either lateral or vertical end of the die 10 and an adjustable nut 51 threaded on the rod and locked by a nut 52 behind it. At its forward end the die 10 is counterbored to form a recess accommodating on the rod 49 another spiral spring 53 locatedbetween shoulders on the rod and die. The rear end of the rod 49, or an adjust-able head 54 thereon, is adapted to strike a relatively fixed stop 55 held to the The stay-strip 13 is refer-ably sustained by a reel 58 from whici the strip passes to and through folder devices 59 which bend the strip transversely downward each way from the center to about the right-angular or \l-form of the stay 12 when applied to a box-corner. From the folder 59 the strip passes between a paste or Water applying wheel 60 rotating in a supply tank, and a superposed pressing roller 61, passes between guidingparts of suitable scraper devices 62 which remove surplus paste or water from the strip From the scraper the strip passes between a pair of rails 63 which properly guide it as it is being seized by the feeding devices 33 and is by them carried forward to and over a final and then I functions.

The detachable gage which qualifies operat-ion of the entire attachment of either turned-in or plain stays to the box-corners, may have any desired orm or arrangementprovided its construction in one or more parts will permit adjustment of the box-corner to the stay-affixing dies with its top or inner edge about in line with the front face of the device'14 when turned-in stays are .used, and will allow the box-cornerto be adjusted farther inward atthe' dies with its inner of action of thedevice 14 when plain stays are used. A preferred and simple form of gagecomprises a plate :65 which is readily attachable to and removable from the front plate 66 of the machine by the use of screws or otherwise. f In explaining the operation of this in vention, the stay-strip 13 will be referred to condition, I

In Figs. 1, 2, 4, 5, of the drawings,. the gage. 65 is adjusted to the machine for applying turned-in box-corner stays in the following manner: When the head-die '7 is raised the feeding devices 33 move theend of the stay-strip 13 forward overa box- 'corner 68, now applied over the bed-dies with its inner or top 'edge resting against the. gage 6.5, as shown by dotted lines in Figs: 1 and 2 .of the drawings. While the strip 13 thus is being fed forward, the inner or turn-in die 10 is drawn backward by the lever 46, and the stop 55 and springs 50,

53 co'act to locate the thin intermediate die 9 directly in front of the line ofmovement of the front face of the Fig; 4 of the drawings. As the dies 9, 10,

take these rearward positions .thehead-die 13, and the device l4also corner and, in the at .the inside and .ingdown of it. forward by the lever 46 and fullyturns in-' 5 side of the boxthe partly tucked-1n end 69 7 and device 14descendand the cutter 30 of said device severs the stay 12 from the strip a little past the outer surface of the boxtion as a tucker, thereby turns partly down, or partially tucks-in between the two dies 9, 10, that portion 69 of the stay 12 which projects rearward beyond theinner edge of the-box,,as. shown die 9 remainsstationary to sustain the box-corner the strip directly to a practically continuous bed-die surface, and

machine to provide for edge about in line with the rear face or line only in its folded and adhesively-coated device 14,- as, shown in j then serves as a top edge of a box-corner about in llne vermoves downward performance of its func ,in Fig.4 ofthedrawmgs. .During this cutting d-partial turning-in 0 of the stay by the device 14, the

prevent crushing or bend- The die 10 now is moved inner walls of the box-corner, as shown in Fig. 5 of thedrawings. movement of the die 10 had also moved the die 9 forward until all three dies 8, 9, 10, were grouped together as in Fig. 5,'to f0 1 as was permitted by yielding of the spring 53. Just before the stay end 69 was turned fully into the box-corner by. the forwardly moving die 10, the head-die 7, because of the clearance at the block-pin 17, had. descended upon the stay. 12'with but the pressure of ltS own weight and thus had clampedthe to prevent said stay-turning-in action of the die 10 from pulling the freshly pasted .or

corner. Toward completion of 'the down stroke "of the die-stock 6 the clearance or play at its link-coupled block 18 is takenv up and the spring 21 then yields to effect final heavier but yielding pressure of the headdie 7 upon" the stay 12 over the bed-dies to cause effective adhesion of the stay to both corner, while at the same time accommodating variable thicknesses of the box side walls and During final pressing of the applied stay 12 between the opposing dies the device 14 may yield upwardly a little against the tension of its spring 28. As t-hedie-7 rises the lever 46 moves the die lO rearward a aim, and the springs 50, 53, reset the box-.co ner support-' strip 13, and for application of it as a turned-in stay "to another box-corner in manner above d cribed.

To apply p in stays 12 to the outer faces only of box-corners bythis same machine, it only is necessary to remove the quickly and easily be done. T he puter face of the front plate 66 of the machlne frame gage stopping the inner or tically with the-inner or rear face of the device 14, or about in line with-the place of severance of the strip 13 to provide the corner stay 12'. These plain stays thus are out only about as long as the height of the box. Aftenthe box-corner 68 is laid upon ,the bed-dies and against the frame gage plate 66, the cutter 3 0of the device 14 severs the strip 13 to furnish a stay 12 of proper length, and any continued movement ofthe device which couldindent or injure the inthe box-corner, itself, is ward bodily yielding of the device 14against resistance of its'spring 28, and-while the. de-

.. vice itself serves as an auxiliary head die of the stay and lays it smoothly against the The same forwardstay to the box-corner with sufiicient forcemoistened stay 12 rearward upon the box-' outer and inner faces or walls of the bOX-' preventing shocks to and breakage of the dies or their operating mechanism} gage plate 65, or its equivalent, which may -.ner end portion of the applied stay or injure prevented by uping die 9 as shown in Fig. 4 of the drawings, ready for cutting of the-next, stay from the I press the adhesiveplain stay to the outer to be fastened on the frame "5 turned-in and plain face of the box-corner and against the resistance of the grouped bed-dies 8, 9, 10; all as will be understood by inspection of Fig. 6 of the drawings.

Various modifications of this invention may be made within the scope of any one or -more of the appended claims.

What I claim as my invent-ion is: 1. In a machine for attaching box corner stays, the combination of a plunger, operat- "mg means yieldingly connected thereto, a

stay cutter serving also as an auxiliary stay pressing means, yieldingly actuating means between the stay cutter and the plunger, a box support, and a combined tucker and presser device carried upon said box support and movable independently thereof.

2. In a machine for attaching box corner stays, the combination of a box support, a plunger, a stay cutter adjacent the inner end of said plungerand adapted to cooperate with the same as a stay-pressing means, an arm projecting from the plunger-,a yielding connection between the arm and the staycutter for actuating the latter, a combined tucker and presser device carried by the box support and adapted to tu rn in the end of a stay and assist in sustaining a box to be stayed, said box support, anda removable gage plate to regulate the position of the box when turnedin stays are .to be applied thereto, said plate being of a thickness equal to the length of the turned-inst-ay.

3. In a machine for attaching box-corner stays, the combination with stay afiixing means including a yielding stay cutter adapted to serve as a folder for turned-in stays and as a presser for plain stays, and a sliding bed die also serving as a tucker for turned-in stays, of aremovable gage plate of the machine the position of'a box for regulating.

are to be applied, said gage turned-in stays plate being of a thickness equal to the length of the turn-in stay end.

4. A machine for attaching box-corner stays, comprising a yielding stay cutting means adapted to serve also as an auxiliary stay-pressing means, and stay-aflixing means inc uding opposing able stay turn-in die having operative portion of a substantially rlght-angled shape, said parts being, adapted to apply stays tothe boxcorners; and an outer box-gage detachable from an inner box gaging wall or part of the machine and 'when'in operative position arran ed relatively to said stay-cutting and stay-a xingmeans to the box when attaching to the box-corners. r

5. A machine for attaching "box-corner turned-in stays tucker being movable on said ,sta s when y pressing dies and a movlimit the position of eena stays, comprising" a I yielding stay-cutting means adapted to serve also as an auxiliary stay-pressing means, and stay-affixing means including opposing pressing dies and a movable stay turn-in die having its operative portion of a substantially right-angled shape, said parts being adapted to apply turned-in and plain stays to the boxcorners; and an outer boxgage comprlsing a plate detachablefro-m an inner box gaging.

wall or part of the machine and whenin operative position arranged relatively to said stay-cutting and stay-affixing means tolimit the position of the box when attaching 'turned-in stays to the box-corners, and when removed enabling the box to be fed farther in so that plain stays may be applied to the box-corners. T

a 6. A' machine for attaching box-corner stays, comprising means for folding a stay strip to approximately right-angular crosssectional form, means for rendering said stay-strip adhesive, means for intermittently feeding the adhesive strip over a box-corner, a yielding stay-cutting means adapted to serve also as an auxiliary stay-pressing means, and stay-afiixing means including opposing pressin dies and a movable stay turn-1n die havlng its operative portion of a substantially right-angled shape, said parts being adapted to apply turned-in and plain stays to the box-corners; and an outer box-gage detachable from an inner box gaging wall and when in operative position arranged relatively to said stay folding, pasting, cutting and aflixing means to limit the position of the box when attaching turned-in stays to. the box-corners when the outer gage is applied in use, and permitting attachment of f plain stays to the box-corners when the outer gate is removed.

7. A machine for attaching box-corner 7 comprising means for folding a staystr-lp to approximately right-angular cross: sectional form, means stayestrip adhesive, means for intermittently feeding the adhesive strip overa box-corner,

a yielding stay-cutting means adapted to serve also as an auxiliary "stay-pressing. means, vopposing pressing turn-indie having its operative portion of a shape, said parts and stay-afiixing means including dies and amovable stay substantially right-angled being adapted to apply turned-in and plain stays to the box-corners; and an outer box-gage comprising a plate detachable from an inner-box gaging wall orpart 8. In a machine for attaching box-corner stays, the" combination of a plunger, operat or part of the machine for rendering said i of the machine and when in operative posiing means yieldingly held connected thereto, a stay-cutter serving also as an auxiliary stay pressing means, yieldingly actuating means between the stay-cutter and the plunger, a box support, a combined tucker and presser device carried upon said box support and movable independently thereof, and a removable gage plate adapted to be secured to the frame to regulate the position of the box when turned-in stays are to be applied thereto.

ANNIE D. KNOWLTON, FREDERIC K; KNOWLTON,

Administrators of the estate of Mark D.

Knowlton, deceased.

Witnesses:

A. B. CURTIS, JAMES W. Anus. 

